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longleaf woodoats
Scientific Name: Chasmanthium sessiliflorum
Family: Poaceae
Category: Monocot
Growth: Graminoid
Duration: Perennial
Other Names:
Longleaf Woodoats (Chasmanthium sessiliflorum)
Longleaf Woodoats, scientifically known as Chasmanthium sessiliflorum, is a perennial grass admired for its shade tolerance and distinctive oat-like seed heads.
Taxonomy and Nomenclature
- Scientific Name: Chasmanthium sessiliflorum (Poir.) Yates
- Common Names: Longleaf Woodoats, Spike Woodoats, Indian Woodoats (sometimes used more broadly)
- Family: Poaceae (Grass Family)
- Synonyms:
- Uniola sessiliflora
- Chasmanthium laxum ssp. sessiliflorum
- Chasmanthium laxum var. sessiliflorum
- Plant Form: Graminoid
Distribution and Habitat
- Native to the southeastern United States.
- Frequently found in moist hammocks and openings in woods where some light penetrates.
- Observed in locations such as near Natchez, Mississippi, Alabama, and Arkansas.
Morphological Characteristics and Growth Habits
- A broad-leafed clumping perennial grass.
- Forms tufted flowers along tall, wiry stems.
- Grows in tufts from rhizomes to a height of 2 to 3 feet.
- Mature seeds are black and approximately 1/10 inch long.
- Forms a fountain-like shape.
Ecological Role
- Can be found in loblolly pine forests, co-existing with species such as little bluestem, beaked panicgrass, and savanna panicgrass.
- Host plant for the Common Wood-Nymph butterfly (Cercyonis pegala).
Further Information
- Discover Life offers information about the biology, natural history, ecology, identification, and distribution of Chasmanthium sessiliflorum.
- USDA-NRCS PLANTS Database also contains information and images.
- Dave's Garden offers a community forum with tips and ideas for gardens.